MPQ3386DR-LF-Z

MPQ3386-AEC1 50V, 6 String White LED Driver AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ3386 is a step-up converter with 6channel current sources designed for driving the white LED arrays for large size LCD panel backlighting applications. • The MPQ3386 uses current mode, fixed frequency architecture. The switching frequency can be selected at 1.25MHz or 625kHz. It generates an output voltage up to 50V from a 4.5V to 25V input supply. The MPQ3386 regulates the current in each LED string to the user programmed value set by an external current setting resistor. • • • • • • • Guaranteed Industrial/Automotive Temp Range Limits 4.5V to 25V Input Voltage Range 50V Maximum Step-up Voltage Balanced Driver for 6 Strings of WLED 3% Current Matching Accuracy Between Strings Selectable Switching Frequency: 1.25MHz or 625kHz PWM or DC Input Burst PWM Dimming Programmable Over-voltage Protection Threshold Under Voltage Lockout Open and Short LED Protection Thermal Shutdown Small QFN24 (4x4mm) Package Available in AEC-Q100 Qualified Grade 1 The MPQ3386 applies 6 internal current sources in each LED string terminal to get current balance. And the current matching achieves 3% regulation accuracy between strings. Its low 600mV regulation voltage on LED current sources reduces power loss and improves efficiency. • • • • • The MPQ3386 features external PWM dimming or DC input PWM dimming, which allows the flexible control of the backlighting luminance under wide range of the ambient brightness, and also avoids the possibility of PWM dimming audible noise. The dimming PWM signal can be generated internally, and the dimming frequency is programmed by an external setting capacitor. APPLICATIONS • • • • Notebook & Netbook PC Small LCD TV Portable Terminals Display Automotive System and Tablet Computer All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MPQ3386 Rev. 1.0 www.MonolithicPower.com 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 1 MPQ3386- 50V, 6 STRINGS WHITE LED DRIVERS, AEC-Q100 QUALIFIED ORDERING INFORMATION Part Number Top Marking MPQ3386DR* Package QFN-24 (4mmx4mm) MPQ3386DR-AEC1** QFN-24 (4mmx4mm) 3386DR 3386DR * For Tape & Reel, add suffix –Z (e.g. MPQ3386DR–Z). For RoHS Compliant Packaging, add suffix –LF (e.g. MPQ3386DR–LF–Z) * * For Tape & Reel, add suffix –Z (e.g. MPQ3386DR-AEC1–Z). For RoHS Compliant Packaging, add suffix –LF (e.g. MPQ3386DR-AEC1–LF–Z) PACKAGE REFERENCE QFN24 (4x4mm) ABSOLUTE MAXIMUM RATINGS (1) VIN ................................................ -0.3V to +30V VVFAULT ......................................... VIN - 6V to VIN VSW, VOUT, VLED1 to VLED6 ................. -1V to +50V All Other Pins ................................. -0.3V to +6V (2) Continuous Power Dissipation (TA = +25°C) …………………………………………………2.9W Junction Temperature 150°C Lead Temperature ................................... 260°C Storage Temperature ............... -65°C to +150°C Recommended Operating Conditions (3) Supply Voltage VIN .......................... 4.5V to 25V Operating Junction Temp. (TJ). -40°C to +125°C (4) θJA θJC QFN-24 (4mmx4mm) ............. 42 ....... 9 .... °C/W Thermal Resistance Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MPQ3386 Rev. 1.0 www.MonolithicPower.com 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 2 MPQ3386- 50V, 6 STRINGS WHITE LED DRIVERS, AEC-Q100 QUALIFIED ELECTRICAL CHARACTERISTICS VIN =12V, VEN = 5V, TJ = -40ºC to + 125°C, unless otherwise noted. Typical values are at TJ=25ºC Parameters Symbol Condition Min Operating Input Voltage VIN Supply Current (Quiescent) IQ VIN=12V, VEN=5V, no load. Supply Current (Shutdown) IST VEN=0V, VIN=12V LDO Output Voltage VCC Input UVLO Threshold VIN_UVLO Typ Max Units 25 V 1.8 2.5 mA 0.05 1 µA 4.5 5 5.5 V 3.4 3.9 4.3 V 4.5 VEN=5V, 0